Holders for safety razor blades



' May 10, 1955 M. A. MccoLL HOLDERS FOR SAFETY RAZOR BLADES Filed Dec.26, 1950 y frs /a/I y ATTORNEY United States Patent G HLDERS FOR SAFETYRAZGR BLADES Meredith A. McColl, Coronation, Alberta, Canada ApplicationDecember 26, 1950, Serial No. 202,696

2 Claims. (Cl. Sil- 336) This invention relates to improvements inholders for safety razor blades, the blade being of the single edge typeor one which is a halfy portion of an originally double edged typedivided longitudinally, and the object ot my invention is to provide ahandy sized holder with separable bar-like blade holding members, andwith means for securing the blade between these members.

Another object of my invention is to provide a tool which is welladapted for use by watchmakers when sharpening very minute pegs of wood,is used in their repair work, and for many other uses such as rippingcloth and such materials, nail paring, and erasing inks, etc.

The advantage is that this device is of simple construction and may becheaply made, and is strong and durable, and consists of few parts.

A further advantage is that the blade is readily detachi' able andreplaceable, and use is made of old razor blades, and still further thata safety cap is provided as a safeguard against accidental cutting, andmay then be conveniently and safely carried in the pocket, and beingonly the halt` portion of a two-bladed razor blade there is very littledanger of cutting ones linger when in use.

A handle encloses the shank portion of the divided blade-embracingplates or forks forming a case, on the top of which a bored cap fits tooutwardly complete the holder, the blade keeper plates bifurcating froma single shank, chuck or stem portion thereof which is insertable withinthe case. The split blade is inserted between these plates and isclamped by suitable screwable means at the opposite bottom end of thecase or handle, which means consist of a thumb screw knob.

The shank portion mentioned terminates in a threaded end on which ascrew operates for drawing down the holding members into the handleportion against wedging means provided to bring the two blade-embracingplates together for clamping the blade. The wedge shaped jaws providedfor clamping are normally divergent through the inherent spring of thematerial of which they are made, and the screwing action applied drawsthe wedges together to iirmly grip the inserted blade or portion of ablade.

With these objects and advantages in view this invention consists in thenovel features of construction hereinafter described and claimed, and inthe drawings accompanying this specification it must be observed thatsimilar numerals refer to similar parts throughout the dilerent views.

Fig. l is a fragmented view of the holder.

Fig. 2 is a detail showing the blade holding plates, with stem andshank, and the ejection spring compressed.

Fig. 3 is a side view, as compared with Fig. 2, of the blade-embracingplates, blade clamping collar, and stem and itsshank in part.

Fig. 4 is an enlarged detail of a portion of one of the keeper plates.

Fig. 5 is an enlarged detail of a portion of the other one of the keeperplates.

Fig. 6 is an enlarged detail of the wedging jaws.

2,707,830 Patented May 1.0, 1.955

Referring to the drawings the letter A indicates generally a razor bladeholder, and comprises a pair of separated blade-embracing plates 1 and 2which form the bifurcated members of the holder extending endwise from astem portion 3 of the holder A. These plates are of spring material, andare formed to remain separated normally for the insertion therebetweenof a half portion B of a razor blade, or a single blade if of singleedge type.

The holder stem is removably insertable into an openended tubular handle4 so hollowed longitudinally as to form a deep socket 5 at least thelength of the holder stem. A threaded shank 6 extends from the end ofthe stem adjacent to the bottom end of the handle 4, and is disposedwithin that end of handle 4 opposite the cooperating blade holder plates1 and 2, and in axial alignment with the handle. A socket 7 at thisshank-containing end of the handle 4 forming the open end thereof,receives a thumb and iinger screw S internally threaded to screwablyengage the threaded shank. This socket 7 is of less diameter than thesocket 5 and is in direct communication therewith. The head 9 of thisthumb and linger screw is rounded and knurled or may be of any suitableshape for easy turning.

Near the base of each of the blade-clamping plates 1 and 2 is a wedgeshaped jaw 10, which pair of jaws are for retracting the said plates 1and 2 into an annular collar or sleeve 11 inserted into the open top endof the handle 4. By means of turning the screw 8 in the proper directionthis retraction is accomplished, and the jaws are separated by turningthe screw 8 in an opposite direction.

The sleeve 11 is of such an interior diameter as to lit around thesmaller diameter or width of the two jaws when separated, and the jawsincrease in diameter or width in an upwardly flaring manner away fromthe said sleeve to provide the wedging effect as they are induced toenter the sleeve 11 manually.

In order to facilitate the movement of the stem 3 extendedly from itsenclosing handle a spring 12 encloses the shank 6, which is held incompression therearound between a shoulder 13 on the stem at the shankend thereof and an annular shoulder 13a formed at the juncture ofsockets 5 and 7, on account of the larger and lesser internal diametersthereof respectively. Thus spring 6 is compressed when turning the thumband iinger screw S for retraction of jaws 10 to grip the blade, andexpands to assist the manipulation for release of the blade.

A number of studs 14 protrude from the inner face of the clamping plate1 which engage opposite recesses 15 in the other clamping plate 2, andthe registration of these studs and recesses assures the keeper clampingeffect on the blade between the clamping plates.

A cap 16 its removably over the top end of the handle 4 and completelycovers the blade and the blade-holding plates 1 and 2. This is a safetyprecaution as well as a dust guard.

It is realized that many types of razor blade holders have been inventedand patented, but my invented device has the advantage of the adaptationof a half portion of a blade in a specifically safe manner, and is ofvery practical use on account of its single cutting edge exposure inplace of the usual double cutting edge type, which is extremely subjectto accident on account of these two edges being exposed.

What I claim and desire to secure by Letters Pat-ent:

1. In a razor blade holding device the combination of a pair of razorblade embracing plates, a stem integral with said plates from which theydividedly extend, a half portion :of a whole razor blade dividedlongitudinally and for placement between said plates, a tubular handleopenended top and bottom and with a deep longitudinal socket te containsaidv stern which is ejectable therefrom by manipulation, a threadedshank forming one end portion of the stern and disposed within thebottom end of the handle, an internally threaded thumb and nger screwrotatable in the bottom open end of the handle and screwably associatedwith said threaded shank for manipulation of the stem and platesreciprocally within the handle, a tapered jaw integral with each of saidplates near their common junction with the stem, and a collar or sleevein the top open end of the handle with which said jaws engage when beingretracted therewithin or disengage when being ejected therefrom asmanipulated by said rotatable screw to effect the closure and separationof the two plates for securing therebetween or releasing therefrom apart of a razor blade.

2. A safety razor blade holder within a tubular handle, open ended topand bottom, and having a blade-protecting cap, comprising the halfportion of a whole razor blade as longitudinally divided, a reciprocalstem with a pair of parallel plates extending from the top end thereoffor clamping said blade portion therebetween, studs in one of saidplates and recesses in the other of said plates into which said studsregister to maintain the proper alignment between said plates, a taperedjaw at one end of each of said plates engaging a collar tted in the topopen end of the handle, a threaded thumb and linger screw inserted inthe bottom open end of the handle rotatable on and screwably connectingwith a threaded shank extending from the end of said stem opposite tosaid plates for retraction and ejection of said plates when manipulatedfor respectively clamping and releasing the blade, a shoulder within thetubular handle near its bottom open end, and a spring braced betweenthis shoulder and a shoulder on the stem to springably assist in theejection of the jaws and plates for release of the blade from theplates, and to keep the thumb and linger screw element within the handlesecurely.

References Cited in the le of this patent UNITED STATES PATENTS

